Table 2.

Interday and intraday accuracy and precision study data.

Level of standard drug added	Interday				Intraday
	Mean % recovery∗	% RSD∗	S.E	95% CI	Mean % recovery∗	% RSD∗	S.E	95% CI
10%	101.10	0.69	0.4041	99.36–102.84	100.27	0.50	0.2906	99.01–101.52
20%	100.97	1.18	0.6984	99.60–101.90	99.23	0.20	0.1202	98.71–99.75
30%	100.43	1.10	0.6386	97.68–103.18	100.6	0.39	0.2309	99.60–101.59

^*(n = 6); % RSD: percentage relative standard deviation; S.E: standard error; 95% CI: 95 percent confidence interval.